jsp的猜数游戏作业

guess1.jsp

<%@ page import="java.util.Random" %><%--
  Created by IntelliJ IDEA.
  User: 行路
  Date: 2020/4/13
  Time: 19:06
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>guess1</title>

</head>
<body>
<%
    Random random=new Random();
   int  i = random.nextInt(100) + 1;
    session.setAttribute("rand",i);
    int count=0;
    session.setAttribute("count",count);
    long time = System.currentTimeMillis();
    session.setAttribute("time",time);
    response.sendRedirect("Guess.jsp");
%>
</body>
</html>

Guess.jsp

<%@ page import="java.util.Random" %><%--
  Created by IntelliJ IDEA.
  User: 行路
  Date: 2020/4/13
  Time: 18:47
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>猜数游戏</title>
</head>
<body>
<%
    int i = (int) session.getAttribute("rand");
    int count = (int) session.getAttribute("count");
    long currentTimeMillis = 0;
    System.out.println(i);
    if (request.getParameter("guess") != "" && request.getParameter("guess") != null) {
        int guess = Integer.parseInt(request.getParameter("guess"));
        if (guess > i) {
            session.setAttribute("guess", "猜大了");
            count++;
            session.setAttribute("count", count);
        } else if (guess < i) {
            session.setAttribute("guess", "猜的太小了");
            count++;
            session.setAttribute("count", count);
        } else {
            session.setAttribute("guess", "猜数正确");
            currentTimeMillis = System.currentTimeMillis();
            count++;
            session.setAttribute("count", count);
        }
    } else {
        session.setAttribute("guess", "输入的数不能为空");
    }
%>
<form action="Guess.jsp" method="post" >
    <p><%
        if (session.getAttribute("guess") != null) {
            out.write(session.getAttribute("guess").toString());
            if (session.getAttribute("guess").toString().equals("猜数正确")) {
                out.write("共猜了" + (int) session.getAttribute("count") + "次,耗时" + (currentTimeMillis - (Long) session.getAttribute("time")) / 1000 + "秒");
            }
        }
    %>
    </p>
    <h2>猜数游戏</h2>
    <p>请输入1-100的数字</p>
    <input type="text" name="guess"/>
    <%
        if (session.getAttribute("guess") != null && session.getAttribute("guess").toString().equals("猜数正确")) {
            session.removeAttribute("guess");
    %>
    <button type="submit" disabled>提交</button>
    <% } else {%>
    <button type="submit">提交</button>
    <%}%>
</form>
</body>
</html>

文章作者: Todcsw

文章链接: https://todcsw.github.io/2020/04/13/%E7%8C%9C%E6%95%B0%E6%B8%B8%E6%88%8F/

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